Public and private.
Public means, it can be audited by everyone, this is amazingly secure as every user can verify their holdings without us knowing they are checking. They can then check the sum of all holdings and compare that to the blockchain to be sure Vaultoro is above 100% reserve.
Users Gold is secured by the Pro Aurum vaulting facility. Pro Aurum is privately audited by one of the largest and most respected auditing firms in the world, BDO International.
A BDO auditor does a full audit of the vault and purity of gold through rigorous security protocols.
We publish the BDO auditing certificate on our logged in audit page.
We also publish the Pro Aurum holdings statement viewable on the audit page (logged in). The statement is updated every week.